The invention discloses a novel non-solid electrolyte tantalum electrolytic capacitor. The novel non-solid electrolyte tantalum electrolytic capacitor includes a housing, a positive electrode leading-out wire, a plunger, a ruthenium dioxide layer, a positive pole tantalum core, a fixed gasket, a negative electrode leading-out wire and an insulator, an inner wall of the housing is plated with the ruthenium dioxide layer, the positive pole tantalum core is arranged in the housing, the plunger is arranged at the top of the housing, two ends of the plunger are connected with the positive pole tantalum core and the insulator respectively, the positive electrode leading-out wire is connected to a tantalum tube of the insulator, the fixed gasket is arranged between the housing and the positive pole tantalum core, the negative electrode leading-out wire is connected to the bottom of the housing, an electronic device is arranged on the negative electrode leading-out wire, and the electronic device has a function of one-way conduction of current. After the diode is added to the negative electrode leading-out wire of the non-solid electrolyte tantalum electrolytic capacitor, when the capacitor bears reverse voltage, the diode effectively prevents reverse current from passing through the capacitor, thereby effectively preventing the capacitor from a reverse breakdown and failure.